Alright, let's solve this math problem step by step. First, we have the number 845. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 431. So, we're going to take the number 845 and add it to itself 431 times.
Step 1: 0 + 845 = 845
Step 2: 845 + 845 = 1690
Step 3: 1690 + 845 = 2535
Step 4: 2535 + 845 = 3380
Step 5: 3380 + 845 = 4225
Step 6: 4225 + 845 = 5070
Step 7: 5070 + 845 = 5915
Step 8: 5915 + 845 = 6760
Step 9: 6760 + 845 = 7605
Step 10: 7605 + 845 = 8450
Step 11: 8450 + 845 = 9295
Step 12: 9295 + 845 = 10140
Step 13: 10140 + 845 = 10985
Step 14: 10985 + 845 = 11830
Step 15: 11830 + 845 = 12675
Step 16: 12675 + 845 = 13520
Step 17: 13520 + 845 = 14365
Step 18: 14365 + 845 = 15210
Step 19: 15210 + 845 = 16055
Step 20: 16055 + 845 = 16900
Step 21: 16900 + 845 = 17745
Step 22: 17745 + 845 = 18590
Step 23: 18590 + 845 = 19435
Step 24: 19435 + 845 = 20280
Step 25: 20280 + 845 = 21125
Step 26: 21125 + 845 = 21970
Step 27: 21970 + 845 = 22815
Step 28: 22815 + 845 = 23660
Step 29: 23660 + 845 = 24505
Step 30: 24505 + 845 = 25350
Step 31: 25350 + 845 = 26195
Step 32: 26195 + 845 = 27040
Step 33: 27040 + 845 = 27885
Step 34: 27885 + 845 = 28730
Step 35: 28730 + 845 = 29575
Step 36: 29575 + 845 = 30420
Step 37: 30420 + 845 = 31265
Step 38: 31265 + 845 = 32110
Step 39: 32110 + 845 = 32955
Step 40: 32955 + 845 = 33800
Step 41: 33800 + 845 = 34645
Step 42: 34645 + 845 = 35490
Step 43: 35490 + 845 = 36335
Step 44: 36335 + 845 = 37180
Step 45: 37180 + 845 = 38025
Step 46: 38025 + 845 = 38870
Step 47: 38870 + 845 = 39715
Step 48: 39715 + 845 = 40560
Step 49: 40560 + 845 = 41405
Step 50: 41405 + 845 = 42250
Step 51: 42250 + 845 = 43095
Step 52: 43095 + 845 = 43940
Step 53: 43940 + 845 = 44785
Step 54: 44785 + 845 = 45630
Step 55: 45630 + 845 = 46475
Step 56: 46475 + 845 = 47320
Step 57: 47320 + 845 = 48165
Step 58: 48165 + 845 = 49010
Step 59: 49010 + 845 = 49855
Step 60: 49855 + 845 = 50700
Step 61: 50700 + 845 = 51545
Step 62: 51545 + 845 = 52390
Step 63: 52390 + 845 = 53235
Step 64: 53235 + 845 = 54080
Step 65: 54080 + 845 = 54925
Step 66: 54925 + 845 = 55770
Step 67: 55770 + 845 = 56615
Step 68: 56615 + 845 = 57460
Step 69: 57460 + 845 = 58305
Step 70: 58305 + 845 = 59150
Step 71: 59150 + 845 = 59995
Step 72: 59995 + 845 = 60840
Step 73: 60840 + 845 = 61685
Step 74: 61685 + 845 = 62530
Step 75: 62530 + 845 = 63375
Step 76: 63375 + 845 = 64220
Step 77: 64220 + 845 = 65065
Step 78: 65065 + 845 = 65910
Step 79: 65910 + 845 = 66755
Step 80: 66755 + 845 = 67600
Step 81: 67600 + 845 = 68445
Step 82: 68445 + 845 = 69290
Step 83: 69290 + 845 = 70135
Step 84: 70135 + 845 = 70980
Step 85: 70980 + 845 = 71825
Step 86: 71825 + 845 = 72670
Step 87: 72670 + 845 = 73515
Step 88: 73515 + 845 = 74360
Step 89: 74360 + 845 = 75205
Step 90: 75205 + 845 = 76050
Step 91: 76050 + 845 = 76895
Step 92: 76895 + 845 = 77740
Step 93: 77740 + 845 = 78585
Step 94: 78585 + 845 = 79430
Step 95: 79430 + 845 = 80275
Step 96: 80275 + 845 = 81120
Step 97: 81120 + 845 = 81965
Step 98: 81965 + 845 = 82810
Step 99: 82810 + 845 = 83655
Step 100: 83655 + 845 = 84500
Step 101: 84500 + 845 = 85345
Step 102: 85345 + 845 = 86190
Step 103: 86190 + 845 = 87035
Step 104: 87035 + 845 = 87880
Step 105: 87880 + 845 = 88725
Step 106: 88725 + 845 = 89570
Step 107: 89570 + 845 = 90415
Step 108: 90415 + 845 = 91260
Step 109: 91260 + 845 = 92105
Step 110: 92105 + 845 = 92950
Step 111: 92950 + 845 = 93795
Step 112: 93795 + 845 = 94640
Step 113: 94640 + 845 = 95485
Step 114: 95485 + 845 = 96330
Step 115: 96330 + 845 = 97175
Step 116: 97175 + 845 = 98020
Step 117: 98020 + 845 = 98865
Step 118: 98865 + 845 = 99710
Step 119: 99710 + 845 = 100555
Step 120: 100555 + 845 = 101400
Step 121: 101400 + 845 = 102245
Step 122: 102245 + 845 = 103090
Step 123: 103090 + 845 = 103935
Step 124: 103935 + 845 = 104780
Step 125: 104780 + 845 = 105625
Step 126: 105625 + 845 = 106470
Step 127: 106470 + 845 = 107315
Step 128: 107315 + 845 = 108160
Step 129: 108160 + 845 = 109005
Step 130: 109005 + 845 = 109850
Step 131: 109850 + 845 = 110695
Step 132: 110695 + 845 = 111540
Step 133: 111540 + 845 = 112385
Step 134: 112385 + 845 = 113230
Step 135: 113230 + 845 = 114075
Step 136: 114075 + 845 = 114920
Step 137: 114920 + 845 = 115765
Step 138: 115765 + 845 = 116610
Step 139: 116610 + 845 = 117455
Step 140: 117455 + 845 = 118300
Step 141: 118300 + 845 = 119145
Step 142: 119145 + 845 = 119990
Step 143: 119990 + 845 = 120835
Step 144: 120835 + 845 = 121680
Step 145: 121680 + 845 = 122525
Step 146: 122525 + 845 = 123370
Step 147: 123370 + 845 = 124215
Step 148: 124215 + 845 = 125060
Step 149: 125060 + 845 = 125905
Step 150: 125905 + 845 = 126750
Step 151: 126750 + 845 = 127595
Step 152: 127595 + 845 = 128440
Step 153: 128440 + 845 = 129285
Step 154: 129285 + 845 = 130130
Step 155: 130130 + 845 = 130975
Step 156: 130975 + 845 = 131820
Step 157: 131820 + 845 = 132665
Step 158: 132665 + 845 = 133510
Step 159: 133510 + 845 = 134355
Step 160: 134355 + 845 = 135200
Step 161: 135200 + 845 = 136045
Step 162: 136045 + 845 = 136890
Step 163: 136890 + 845 = 137735
Step 164: 137735 + 845 = 138580
Step 165: 138580 + 845 = 139425
Step 166: 139425 + 845 = 140270
Step 167: 140270 + 845 = 141115
Step 168: 141115 + 845 = 141960
Step 169: 141960 + 845 = 142805
Step 170: 142805 + 845 = 143650
Step 171: 143650 + 845 = 144495
Step 172: 144495 + 845 = 145340
Step 173: 145340 + 845 = 146185
Step 174: 146185 + 845 = 147030
Step 175: 147030 + 845 = 147875
Step 176: 147875 + 845 = 148720
Step 177: 148720 + 845 = 149565
Step 178: 149565 + 845 = 150410
Step 179: 150410 + 845 = 151255
Step 180: 151255 + 845 = 152100
Step 181: 152100 + 845 = 152945
Step 182: 152945 + 845 = 153790
Step 183: 153790 + 845 = 154635
Step 184: 154635 + 845 = 155480
Step 185: 155480 + 845 = 156325
Step 186: 156325 + 845 = 157170
Step 187: 157170 + 845 = 158015
Step 188: 158015 + 845 = 158860
Step 189: 158860 + 845 = 159705
Step 190: 159705 + 845 = 160550
Step 191: 160550 + 845 = 161395
Step 192: 161395 + 845 = 162240
Step 193: 162240 + 845 = 163085
Step 194: 163085 + 845 = 163930
Step 195: 163930 + 845 = 164775
Step 196: 164775 + 845 = 165620
Step 197: 165620 + 845 = 166465
Step 198: 166465 + 845 = 167310
Step 199: 167310 + 845 = 168155
Step 200: 168155 + 845 = 169000
Step 201: 169000 + 845 = 169845
Step 202: 169845 + 845 = 170690
Step 203: 170690 + 845 = 171535
Step 204: 171535 + 845 = 172380
Step 205: 172380 + 845 = 173225
Step 206: 173225 + 845 = 174070
Step 207: 174070 + 845 = 174915
Step 208: 174915 + 845 = 175760
Step 209: 175760 + 845 = 176605
Step 210: 176605 + 845 = 177450
Step 211: 177450 + 845 = 178295
Step 212: 178295 + 845 = 179140
Step 213: 179140 + 845 = 179985
Step 214: 179985 + 845 = 180830
Step 215: 180830 + 845 = 181675
Step 216: 181675 + 845 = 182520
Step 217: 182520 + 845 = 183365
Step 218: 183365 + 845 = 184210
Step 219: 184210 + 845 = 185055
Step 220: 185055 + 845 = 185900
Step 221: 185900 + 845 = 186745
Step 222: 186745 + 845 = 187590
Step 223: 187590 + 845 = 188435
Step 224: 188435 + 845 = 189280
Step 225: 189280 + 845 = 190125
Step 226: 190125 + 845 = 190970
Step 227: 190970 + 845 = 191815
Step 228: 191815 + 845 = 192660
Step 229: 192660 + 845 = 193505
Step 230: 193505 + 845 = 194350
Step 231: 194350 + 845 = 195195
Step 232: 195195 + 845 = 196040
Step 233: 196040 + 845 = 196885
Step 234: 196885 + 845 = 197730
Step 235: 197730 + 845 = 198575
Step 236: 198575 + 845 = 199420
Step 237: 199420 + 845 = 200265
Step 238: 200265 + 845 = 201110
Step 239: 201110 + 845 = 201955
Step 240: 201955 + 845 = 202800
Step 241: 202800 + 845 = 203645
Step 242: 203645 + 845 = 204490
Step 243: 204490 + 845 = 205335
Step 244: 205335 + 845 = 206180
Step 245: 206180 + 845 = 207025
Step 246: 207025 + 845 = 207870
Step 247: 207870 + 845 = 208715
Step 248: 208715 + 845 = 209560
Step 249: 209560 + 845 = 210405
Step 250: 210405 + 845 = 211250
Step 251: 211250 + 845 = 212095
Step 252: 212095 + 845 = 212940
Step 253: 212940 + 845 = 213785
Step 254: 213785 + 845 = 214630
Step 255: 214630 + 845 = 215475
Step 256: 215475 + 845 = 216320
Step 257: 216320 + 845 = 217165
Step 258: 217165 + 845 = 218010
Step 259: 218010 + 845 = 218855
Step 260: 218855 + 845 = 219700
Step 261: 219700 + 845 = 220545
Step 262: 220545 + 845 = 221390
Step 263: 221390 + 845 = 222235
Step 264: 222235 + 845 = 223080
Step 265: 223080 + 845 = 223925
Step 266: 223925 + 845 = 224770
Step 267: 224770 + 845 = 225615
Step 268: 225615 + 845 = 226460
Step 269: 226460 + 845 = 227305
Step 270: 227305 + 845 = 228150
Step 271: 228150 + 845 = 228995
Step 272: 228995 + 845 = 229840
Step 273: 229840 + 845 = 230685
Step 274: 230685 + 845 = 231530
Step 275: 231530 + 845 = 232375
Step 276: 232375 + 845 = 233220
Step 277: 233220 + 845 = 234065
Step 278: 234065 + 845 = 234910
Step 279: 234910 + 845 = 235755
Step 280: 235755 + 845 = 236600
Step 281: 236600 + 845 = 237445
Step 282: 237445 + 845 = 238290
Step 283: 238290 + 845 = 239135
Step 284: 239135 + 845 = 239980
Step 285: 239980 + 845 = 240825
Step 286: 240825 + 845 = 241670
Step 287: 241670 + 845 = 242515
Step 288: 242515 + 845 = 243360
Step 289: 243360 + 845 = 244205
Step 290: 244205 + 845 = 245050
Step 291: 245050 + 845 = 245895
Step 292: 245895 + 845 = 246740
Step 293: 246740 + 845 = 247585
Step 294: 247585 + 845 = 248430
Step 295: 248430 + 845 = 249275
Step 296: 249275 + 845 = 250120
Step 297: 250120 + 845 = 250965
Step 298: 250965 + 845 = 251810
Step 299: 251810 + 845 = 252655
Step 300: 252655 + 845 = 253500
Step 301: 253500 + 845 = 254345
Step 302: 254345 + 845 = 255190
Step 303: 255190 + 845 = 256035
Step 304: 256035 + 845 = 256880
Step 305: 256880 + 845 = 257725
Step 306: 257725 + 845 = 258570
Step 307: 258570 + 845 = 259415
Step 308: 259415 + 845 = 260260
Step 309: 260260 + 845 = 261105
Step 310: 261105 + 845 = 261950
Step 311: 261950 + 845 = 262795
Step 312: 262795 + 845 = 263640
Step 313: 263640 + 845 = 264485
Step 314: 264485 + 845 = 265330
Step 315: 265330 + 845 = 266175
Step 316: 266175 + 845 = 267020
Step 317: 267020 + 845 = 267865
Step 318: 267865 + 845 = 268710
Step 319: 268710 + 845 = 269555
Step 320: 269555 + 845 = 270400
Step 321: 270400 + 845 = 271245
Step 322: 271245 + 845 = 272090
Step 323: 272090 + 845 = 272935
Step 324: 272935 + 845 = 273780
Step 325: 273780 + 845 = 274625
Step 326: 274625 + 845 = 275470
Step 327: 275470 + 845 = 276315
Step 328: 276315 + 845 = 277160
Step 329: 277160 + 845 = 278005
Step 330: 278005 + 845 = 278850
Step 331: 278850 + 845 = 279695
Step 332: 279695 + 845 = 280540
Step 333: 280540 + 845 = 281385
Step 334: 281385 + 845 = 282230
Step 335: 282230 + 845 = 283075
Step 336: 283075 + 845 = 283920
Step 337: 283920 + 845 = 284765
Step 338: 284765 + 845 = 285610
Step 339: 285610 + 845 = 286455
Step 340: 286455 + 845 = 287300
Step 341: 287300 + 845 = 288145
Step 342: 288145 + 845 = 288990
Step 343: 288990 + 845 = 289835
Step 344: 289835 + 845 = 290680
Step 345: 290680 + 845 = 291525
Step 346: 291525 + 845 = 292370
Step 347: 292370 + 845 = 293215
Step 348: 293215 + 845 = 294060
Step 349: 294060 + 845 = 294905
Step 350: 294905 + 845 = 295750
Step 351: 295750 + 845 = 296595
Step 352: 296595 + 845 = 297440
Step 353: 297440 + 845 = 298285
Step 354: 298285 + 845 = 299130
Step 355: 299130 + 845 = 299975
Step 356: 299975 + 845 = 300820
Step 357: 300820 + 845 = 301665
Step 358: 301665 + 845 = 302510
Step 359: 302510 + 845 = 303355
Step 360: 303355 + 845 = 304200
Step 361: 304200 + 845 = 305045
Step 362: 305045 + 845 = 305890
Step 363: 305890 + 845 = 306735
Step 364: 306735 + 845 = 307580
Step 365: 307580 + 845 = 308425
Step 366: 308425 + 845 = 309270
Step 367: 309270 + 845 = 310115
Step 368: 310115 + 845 = 310960
Step 369: 310960 + 845 = 311805
Step 370: 311805 + 845 = 312650
Step 371: 312650 + 845 = 313495
Step 372: 313495 + 845 = 314340
Step 373: 314340 + 845 = 315185
Step 374: 315185 + 845 = 316030
Step 375: 316030 + 845 = 316875
Step 376: 316875 + 845 = 317720
Step 377: 317720 + 845 = 318565
Step 378: 318565 + 845 = 319410
Step 379: 319410 + 845 = 320255
Step 380: 320255 + 845 = 321100
Step 381: 321100 + 845 = 321945
Step 382: 321945 + 845 = 322790
Step 383: 322790 + 845 = 323635
Step 384: 323635 + 845 = 324480
Step 385: 324480 + 845 = 325325
Step 386: 325325 + 845 = 326170
Step 387: 326170 + 845 = 327015
Step 388: 327015 + 845 = 327860
Step 389: 327860 + 845 = 328705
Step 390: 328705 + 845 = 329550
Step 391: 329550 + 845 = 330395
Step 392: 330395 + 845 = 331240
Step 393: 331240 + 845 = 332085
Step 394: 332085 + 845 = 332930
Step 395: 332930 + 845 = 333775
Step 396: 333775 + 845 = 334620
Step 397: 334620 + 845 = 335465
Step 398: 335465 + 845 = 336310
Step 399: 336310 + 845 = 337155
Step 400: 337155 + 845 = 338000
Step 401: 338000 + 845 = 338845
Step 402: 338845 + 845 = 339690
Step 403: 339690 + 845 = 340535
Step 404: 340535 + 845 = 341380
Step 405: 341380 + 845 = 342225
Step 406: 342225 + 845 = 343070
Step 407: 343070 + 845 = 343915
Step 408: 343915 + 845 = 344760
Step 409: 344760 + 845 = 345605
Step 410: 345605 + 845 = 346450
Step 411: 346450 + 845 = 347295
Step 412: 347295 + 845 = 348140
Step 413: 348140 + 845 = 348985
Step 414: 348985 + 845 = 349830
Step 415: 349830 + 845 = 350675
Step 416: 350675 + 845 = 351520
Step 417: 351520 + 845 = 352365
Step 418: 352365 + 845 = 353210
Step 419: 353210 + 845 = 354055
Step 420: 354055 + 845 = 354900
Step 421: 354900 + 845 = 355745
Step 422: 355745 + 845 = 356590
Step 423: 356590 + 845 = 357435
Step 424: 357435 + 845 = 358280
Step 425: 358280 + 845 = 359125
Step 426: 359125 + 845 = 359970
Step 427: 359970 + 845 = 360815
Step 428: 360815 + 845 = 361660
Step 429: 361660 + 845 = 362505
Step 430: 362505 + 845 = 363350
Step 431: 363350 + 845 = 364195

So, 845*431 = 364195